Purging In The Lockout Position - Siemens LMV36.520A1 Basic Documentation

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LMV...
Fan continuous purging
Fan normal operation
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Building Technologies Division
Infrastructure & Citiies Sector

7.5.5.12. Purging in the lockout position

Parameter 190 can be used to move the actuators (actuators or VSD) to the postpurge
position while they are in the lockout position.
No. Parameter
190 Postpurging in lockout position
0 = deactivate (no-load position)
1 = active (postpurge position)
When active, the Alarm in the event of start prevention function (parameter
210) is only possible to a limited extent!
Note!
The LMV3 system simply moves the actuators (actuators or VSD) to the postpurge
position. A fan or VSD release contact cannot be controlled, as the alarm relay of the
LMV3 system cuts off the power supply to the outputs. With the Alarm in the event of
start prevention function, an external circuit that may be present for controlling the fan
/ VSD release contact for purging in the lockout position is activated via start
prevention in standby mode.
Fan continuous purging
Fan normal operation
Figure 43: Application example of purging in the lockout position with fan but without VSD
The duration of purging in the lockout position can be set via the delay time of K3.
Attention!
When the Purging in the lockout position function is used, the fan may only be
powered via a contactor and must not be connected directly to LMV3 (X3-05 pin
1)!
Siemens Micromaster 440
Setpoint 0...10 V
K1 K2 K3
Bild 430e/0913
N N N
Figure 44: Application example of purging in the lockout position with fan and VSD release contact
The duration of purging in the lockout position can be set via the delay time of K3.
Attention!
When the Purging in the lockout position function is used, the fan may only be
powered via a contactor and must not be connected directly to LMV3 (X3-05 pin
1)!
Basic documentation LMV36...
7 Basic unit
LMV...
K2 K3
K1 K2
Bild 429e/0913
N N
Standardization
of speed
22
X74 pin 1 DC 24 V external
9
+24 V
5
K1
K2 K3
21
X74 pin 3 VSD control DC 0/1...10 V
3
+
4 X74 pin 2 signal reference
28
K1
X3-05 pin 1 fan motor contactor
K1
L
K3
N
CC1P7544en
25.09.2013